Optically Worked Double Convex Glass Lens, 75mm Diameter, 1000mm Focal Length Chemical_Calcium Chloride exposing the cylindrical field pattern

exposing the cylindrical field pattern that distinguishes a solenoid from a single loop

and other forensic chemistry techniques for evidence analysis

Low-conductivity lead rods at 300 by 3mm in a ten-pack

or general beverage service at home or the lab

securing round flasks and condensers on retort stand rods without scratching

Optically Worked Double Convex Glass Lens, 75mm Diameter, 1000mm Focal Length Chemical_Calcium Chloride exposing the cylindrical field patternDesigned for parallel beam refraction work, this 75mm double convex glass lens at 1000mm focal length runs at f 13, near collimated for astronomical analogue and long throw projection setups.